574 MR. p. L. SCLATER ON NEW FORMICARIANS. [NoV. 26, 



have long tried in vain to find a published description. It was ob- 

 tained along with other birds by Mr. Clarence Bartlett, at Mr. 

 Kappler's plantation on the Maroni River, Surinam, in 1866. It is 

 rather a strongly built species, appearing to agree better with Hete- 

 rocnemis than with any other genus, the divisions of the anterior 

 scutes of the tarsus being quite obsolete. There are no traces of an 

 interscapular spot. 



I was at first inclined to think this might be the male of Serpsi- 

 lochmus arffentaius of Des Murs {Myrmeciza, sp. 1141 of my Cata- 

 logue), although it has a much longer tail. But it is certainly dif- 

 ferent from Heterocnemis albiventris of Pelzeln (Orn. Bras. p. 161), 

 which Pelzeln supposes to be, and which probably is, the male of 

 the bird in question. 



6. CONOPOPHAGA GUTTURALIS. 



Supra brunnescenti-olivacea, dorsi plumis quibusdatn vix conspicue 

 nigro marginatis : fasciculo 2^ostoculari albo : capite toto et 

 corpore subtus ad inmm pectus castaneis, plaga in gutture 

 medio alba : ventre medio schistaceo, lateraliter olivaceo jje?'- 

 fuso : rostro superiore nigro, inferiore fiavo : 2>edibus coi'yUnis : 

 long, tota 4'.5, alee 2'8, caudce 1*6, tarsi 1*1, rostri a rictu 0"8. 

 Hab. in Nov. Granada int. 



I have a single "Bogota" skin of this well-marked species, pur- 

 chased of Mr. S. Stevens. In general aspect it comes nearest to 

 G. cucullata, mihi (P. Z. S. 1856, p. 29, t. 119), which has a some- 

 what similar guttural spot ; but that species has no postocular tuft, 

 and a yellow bill. The present species has a white postocular tuft, 

 as in C. aurita, and belongs to the first section of the genus as 

 arranged P. Z. S. 1858, p. 284. 



When I published my Catalogue of American Birds in 1862, my 

 collection of Formicariidse consisted of 280 skins referable to 145 

 different species. I have since added to it 101 skins, and have now 

 381 specimens belonging to 178 different species. The new species 

 added since the catalogue m as issued are : — 



I. Thamnophilin^e. 



1 . Thamnophilus hollandi, Lawr., ex Nicaragua. 



2. T. melanurus, Gould, ex Peruv. orient. 



3. T. borbcB, Pelz., ex fl. Madeira. 



4. T. cinereoniger, Pelz., ex Rio Negro. 



5. T. luctuosus, Licht., ex Para. 



6. T. tschadii, Pelz., ex fl. INIadeira. 



7. T. murinus, Sclater, ex Rio Negro. 



8. T. nigriceps, Sclater, ex Nov. Granada int. 



9. T. tenuipimctatus, Lafr., ex jEquat. et Nov. Granada. 



10. T. albicans (Lafr.), ex Nov. Granada int. 



11. T.argentinus, Cab., ex rep. Argentina. 



